Concrete-mixing machine.



'PATENTED APR. 7', 1908. R. T. sOLLITT. concam: MIXING MACHINE.

PP I AT L .28 1 A L 0 ION II ED NOV 903 BSHEETS SEEETL PATENTED APR. 71908. N0 883983 R. T. SOLLITT.

CONCRETE MIXING MACHINE. APPLICATION FILED NOV. 28, 1903.

8 SHEETS-SHEET 2.

H.883 as. PATENTED APR.7 190s.

'R. T. SOLLITT.

CONCRETE MIXING MAOHINB.

APPIIOATION FILED NOV. 2a, 1903.

8 SHEETS-SHEET 3.

PATENTED APR. '7, 1908.

R'., T. SOLLITT. CONCRETE MIXING MACHINE.

Arrmunlo'n nLnn'Nov. 2B 1903.

. 1' a sums-sum 4.

P M I H G TMAB M IE RT E R nu N 0 nu APPLICATIOH FILED NOV. 28, 1903.

8 SHEETS SHEET 6.

PATENTBMPR. 7, 1908.

8 SHEETS-SHEET B.

R. T. SOLLITT. CONCRETE MIXING MACHINE. APPLICATION E' ILED NOV. 281903.

PATHNTED APR. 7, 1908.

a SHEETS-$31151 7.

R. T. SOLLITT. CONCRETE MIXING MACHINE.

APPLICATION FILED NOV. 28, 1903.

No. 883,983. PATENTBD A PR. 7 1908. i

R. T. SOLLITT.

CONCRETE MIXING MACHINE.

PP 01 1H 51) v.2 1. A MAID sauna-sum a.

I? j Z1 193 M1 71 ass 6s. 1 v @(fiflfQ/Z WW I M chines, of which thefollowing is e s13eeifieewe accompanyeasilyiiendledl plzir View, ill

m i es "m i f x ,31

ALPH T. SOLLITT, CHKEWO, ILLINOIS.

GDNCRE TE 41km Application filed November as, 1903.

To LU 21172 om ii may concern:

Be it kllOWIl that l, RALPH T. SOLLHT, a citizen of the United States,resid ng at Chicago, 11; the eounty oi Cook and State '01 Illinois, haveinvented certain new and use- :iul improvements in Concrete-Mixing Matiori, reference beinghed to iii g drawings.

iviy invention'reletes to machines for mix- Specification of Let-lie":

ing the ingredients used in melt ng concrete,

which are usually crushed stone,

sand, cement.

'It has for its object to provide a new and I improved machine, bywhich. the mixing 0i ients may be thoroughly effected the ingred and bywhich the materials, both before {miter mixing,

(lee ribed.

VJhet I regard as new is set forth claims. In the accompanying drawings5. side elevation, illusireti an end. view, pare y in section,illustrating a. mien View of the snown in i i. 1; tion. of that cert 4 e1e i...g-pe11s;i*1g. 3 1s hopper end ad acent parts Fig. is alongitudinal of "the mixingmpperetus which lies bet she charging-pans '5l View, illustrating the inner portion of chewing-pens and adjacentparts of the and and

may be more economically and l accomplish this ob ct as illustrated 1nthe drawings and as herenmteer in the ,-Figure 1 one form of machineembodying my invention; Fig. 12 is s an enlarged 1 iew oi a pert or theeonveyer-meehamen 111 Figsl and 4; F 1g. 6 1s a longitudinal Dian shine;Fig. 8 is a side elevation of one of the T al 1g. 9 is e part1 modifiedform of conveyer GEC'LlOH on line 1010 of Fig.

q i I l nks of the eonveyer shown. in Figs. 5 and 9 el prim View,illusireting a Fig. 10 is a erossline side elevation, fillermodification; Fig. 141s plan VIE-W or a part of the mechanism shownllustre ling Fig, 1 6 is an end ViBW Sid e t to e 1 ion nlustre g e weeoperating mechanism hrougli which if ac rtizil plan View, partly lit";SllG'Wl tli errengemeni oi oper l s and clutches ma. sine is e trolled;Fig. vetiori the form or" epeuratus, Fig. 1; F 2'. a partial longitu.tio'n View of the upper portion of ne and earrier,-slrowing also :1 parkof liver ,--spou't; and 2 1- is fi.,il()1ll60i tion on line 24--2 l of2b.

In the simplest form of my iinpizfoved me chine, 'liustraieil in. Fig.1, 1 proriil 1 x Fell W5? inclined trough 21, wl'iioli leads from :2. 4J stantially l'zorizontal trough 22 best slimm in Fig. 2 to a hopper123,-the upper end of trough being: a. suflieien'bly high elev; so that,n. hopper of ihe required e peei 75 mey be used. The hopper m.

Gil

legs 24, and is provided a-ifa1iinel25, 11

by erosso of swinging-links The gate is is e m y com:

mel .1 ends b pivots 2%; \Yii'll t. oi the no per as shown in Figs. The'uoli that may be sv m L from the i. -.sl1oim 'obted lines in Fig.

till-3 iullllm. if: groiind,--ihe arre-iigement being so;

SUl'i'lClBllil' space is provii'l .Jl for a barrow to be set below thehopper to i'PMl ye the contents thereof.

The usual ing encs fer reek are supplied to the horizontaleliargingqimns 30-3l, arrr sides there and pivoted ill ta, at poinbs sh-l1 .y above tlwe si\ es the L pivots 34 as siuiiwn in 3f. 22. l

36 imlieetes braces, (011E198 For: (:rel i" iin g ills pi EMF-35.

3: iu' iceies she-ft, by \vliieli a 30 ere oeliied to disem U inio the 11 is moiml' zl horizontal V .7 17 sent Lllf e theirinner ends to theshaft 37, as shown in Figs. 1 and 2. Said cables are so arranged thatwhen one of them is wound upon the shaft 37 the other is unwound, asshown in .Fig. 1, so that by rotating said shaft in one direction or theother, either of the pans 3031 may be tilted to discharge its contentsinto'the trough, while the other is rocked in the opposite direction,into position to receive a fresh charge. A crank 42, or other suitabledevice, is provided for rotating the shaft 37.

In practice, sand, cement and stone in proper proportions are dumpedinto the pan which is in position to receive the charge, as, forexample, the pan 30 in Fig. 2. The shaft 37 is then rotated, raising-thepan with its contents and discharging the mass of materials into thetrough 22,-the other pan at the same time moving down into position toreceive another charge. The materials so dumped into the trough 22 aremixed, and simultaneously elevated, by a traveling conveyer 43,consisting, in the form shown in Fig. 1, of an endless chain whichpasses around a lower pulley 44 and an upper sprocket-wheel 45,saidsprocket-wheel being mounted upon a shaft 46 mounted on the hopper 23and driven from a drive-shaft 47 by intermeshing pinions 4849,as shownin Fig. 1. The shaft 47 is provided with fast and loose pulleys 50'51,shown in Figs. 1 and 3, so that its operation may be readily controlled.It may be driven from. any suitable source of power. The pulley 44 iscarried by a shaft 52, suitably mounted in sliding-boxes 53 mounted insupports 54 near the standard 38. By this construction the pulley 44 maybe adjusted to regulate the tension on the conveyer-chain 43.

As best shown in Figs. 1 and 4, the lower portion of the chain 43 passesthrough the trough 22 and up through the trough 21 carrying thematerials up on the trough, on which they rest during the mixing andelevating operation,the upper portion of the chain forming the return.In orderto hold the lower portion of the chain 43 down in properoperative position, I provide a tension-pulley 55, best shown in Figs. 1and 7, which is loosely mounted on shaft 56 fitted with suitable collars57 which are cylindrical in form and are adapted to engage the sideedges of the trough 21 when said pulley is in its lowermost position, asshown in Fig. 1. Springs 58 are provided, which, at one end, are securedto the sides of the trough 2l,*their free ends resting upon the collars57, exerting downward pressure thereupon. Adjusting screws 59 areprovided over the springs 58 for regulating the tension upon the collars57. To prevent the shaft 56 from becoming displaced, said shaft extendsthrough slots 60 in side plates 61 provided adjacent to the standard 39,as-

ssaees is free to move toward and from the upperedges of the trough,except in so far as its position is controlled by the springs 58. By

this construction the pulley 55 has sufficient freedom of actiontopermit of the passage of large masses of material without dangerofbreakingjand the tension-pulley 55 cannot move downward far enough tocause the conveyer to bear too hard upon the trough.

If desired, the collars 57 may be arranged to bear in the slots 60instead of on the upper edges of the sides of the trough 21, in whichcase said slots are suitably enlarged, as shown in Fig. 17.

The construction of the conveyer-chain 43 is best shown in Figs. 4, 5,and 6,-from an inspection of which it will be seen that said chain iscomposed of conveyer-links 62 and connecting-links 63. The conveyerlinks62 consist of open rectangular frames, shown in Fig. 5, havingdownwardly-extending blades 6465 which also extend forward at one side,after the manner of a plow. As shown in Fig. 5, the blades 64 extenddownward, and are coincident with the side edges of the links 62, whilethe blades 65 project both downward and laterally beyond the side edgesof said links. On alternate links 62 the blades 65 project'in oppositedirections, as shown in Fig. 5. The links 63 are small bars'whichpivotally connect the links 62. The conveyer-links 62 do not act solelyto elevate the mass of materials in the trough, but, by moving upwardthrough the inclined trough 21, they serve to effect a completeintermixture of the ingredients, which are delivered to the hopper in athoroughly mixed condition. The conveyer is so constructed that thematerials are not carried up continuously, but are given anintermittently progressive movement,falling back from time to time overthe upper edges of the blades 6465, and being also thrown from side toside, by the blades 6465, owing to the form and arrangement of saidblades, the forward edges of which are inclined, in whole or in part, tothe line of movement of the conveyer; so that any given quantity ofmaterial is turned over many times before reaching the hopper. gous tothat secured when such materialsare hoed by hand, as is the custom wheremachihery is not employed for mixing purposes.

In order to control the feeding of the unmixed materials to the trough22,,1 provide a plate 66, which extends over the trough 22, as shown inFig. 4, and is provided with a number of openings 67 through which thematerial dumped upon said plate from the pans 3031 may pass to thetrough 22. The size of the openings 67, and the feeding of the materialthrough said openings, is controlled The effect is analothe materialsare carried up irregular assess by sliding-plates 68 secured to theupper side which are turned down, as shown in Fig. 4,

so as to lie in the path of the conveyor. By this construction theplates 68 may be adjusted to project a greater or less distance into theopenings 67, thereby regulating the size of said openings; and thehinged ends of said plates operate to agitate the material lying on theplate 66, since, as the conveyer moves along, its links successivelyengage the downturned ends of said plates, causing them to vibrate andagitate the n1aterial,-thus preventing packing thereof and insuring theproper feeding of the material through the openings 67.

in Fig. 9, l have shown a modified form of conveyer-mechanism, in whichI employ two conveyer-chains 7273 arranged to move through the troughs2l- 22 side by side,-being operated by sprocket-wheels "is--75,respectively, mounted on a shaft 76 which corresponds with the shaft 46.Said sprocket-wheels 74-75 are of different diameters, so that thechains 7273 move at different speeds. In other respects. they areoperated similarly to the chain Each of said chains 7273 is composed ofa series of links 77 having blades 7 8, shown in Fig. 8,- the blades ofthe two chains 72-73 being oppositely disposed, as shown in Fig. 9. Bythisconstruction the materials are thrown back and forth across thetrough from one conveyer to the other as it moves upward therein,thuseffecting a thorough intermixture thereof. In this arrang ent also J thetransverse movement of the materia effected by the operation of thebelts at d1iferent rates of speed, being supplementary to such movement.

In Fig. 11 I have shown an amplification of the construction shown inFig. 9, in which I employ three crmveyer-chains 79-S0-8Lrespectively,-the outside chains 7981 be ing driven by pulleys 82-83 ofthe same di- 'ameter, While the intermediate chain. is

driven by a pulley 84 of di'lierent diameter thinner-rid pullevs Allol'said pull mounted on the same 555, wt corresponds with the shalt Thusthe outside chains move at the same rate of speed, While theintermediate chain moves at a different rate, of speed. By thisconstruction, also, I secure thelateral movement of the materials,together with their irregularly progressive movement.

A further irn rovement, especially applicable where a p urality ofchains moving at diii'erent rates of speedare employed, consists ina'trough 86 having a depressed portion 3 which. one of the chains moves.As shown in Fig. 31, the depressed portion (\7 is arrangedinterinediately and receives the chain 80,-the blades of which are flat,whereas the blades of the chains Til -Q0 are inclined, as shown.

Instead of using an endless coi'weyer as lescribed, I may also employoonveycrs'zi ranged to reciprocate, as best shown in Fig. 13, in whichtwo reciprocating conveyers SS SQ are provided, the conveyer 8E4operating in the inclined trough 21, while the conveyer 89 operates inthe horizontal trough :22. Said conveyers consist of i. unes provided attheir ends with brackets 90--9l and 92-- 93, respectively, by which saidframes are guided as thev :eci n'ocato. For guiding the conveyer rollersare pro v ided near the ends of the trough 2) said roll running in theslots 9 5 91 form-ed b the brackets 91, as shown in Fig. 13. The coreveyer S9 is guided by the roller 95 and a roller 98 at the opposite endof the trough 22,-said rollers running in slots 99 100 formed by thebrackets 92-93. Said conveyers are reciprocated by pitnien l0l-l()2,respectively, connected to a crank-pin r03 carried by a oisl; 104mounted on a shaft lib) which carries pulley 106 driven by any suitablesource of power. Each of the conveyer" Ski--89 carries a series oiblades 107. which are hinged to depending arms 10?? in such manner as toswing forward, but not backward: consequently when said core veyers S889 move to the left, shown in Fig. 13, they travel longitudinally of thetrough, and the materials in advance oi" the blades H)? are carriedforward and up 'l. At the same time part oi the material over iiows theupoer edges of the blades and falls back upon Le n'iaterial behind it.(lo the return movement of said conveyors l he blai lee 107 swing on toa substantially horizontal position,'rioin g over the materials in thetroughs. This construction also provides for e intermittentlyprogressive movement 1e materials.

n1 l i s. l5 and 16 I have shou ri [I mechanism consisting oi revol 109110 carrying dcpeui'ling rig 'ob also tr ever in the trouggl i B theframes lflll, while that in. ti

consists oi three 0 the frames l 1. i i frames 109 are supported byupper and lower shafts ll2- ll3 at the ends of the trough 21,-whichshafts carry cranlearn s 114 115, respectively, to which the ends of tframes 109 are pivoted, so that as said shafts rotate, the frames 109revolve through the trough 21, carrying up therein any encountered bythe arms 11 Tl .o frames 109, course, op upon the mat the iron mannerthe l'i'zum-s ill) in the i rials &

supported by arms 115 and by similar arms 116 carried by a shaft 117 atthe opposite end of the trough 22, sothat the arms 111 of said frames110 0 erate to move any materials in the troug 22 along until they aretaken u All the frames 109-110 are 0 erated from the shaft 113, which isprovide with a gear 118, or other means for driving it from any suitablesource of power. By this construction I provide for the lateral ortransverse movement from side to side of the materials in the trough, aswell as the intermittently progressive movement, since the materials arethrown from side to side by the blades of the different frames.

In Figs. 17 to 20, I have illustrated the embodiment of my invention inan automobilemachine, so that all the parts of the apparatus may bereadily and quickly transported from lace to place, and by which alsothe mixed concrete may be discharged from the machine directly to theplace where it is to be used, without the intervention of manual labor.In the machine shown in said figures, I em loy a supporting frame 119mounted on ront'and rearwheels 120-121,- the front axle 122 beingconnected to a ver tically-disposed spindle 123 having a wheel 124 bywhich it may be rotated to guide the machine. The rear wheels 121 areprovided with sprocket-wheels 126, connected by a chain 127 to a pinion128 mounted on a drive-shaft 129 carried in suitable bearings below theframe 119 and driven from an engine 130 by a chain 131. The engine 130may be ofany suitable type for the purpose. 132 indicates a standard atthe rear end of the frame 119, which supports a hopper 133 correspondingto the ho per 23, as shown in Fig. 17. The standarr 132 also carries ashaft 134, which corresponds to the shaft 46 and carries asprocket-wheel 45 by which the conveyer-chain 43 is operated. The upperend of the trou h 21 is also pivotally secured to the standarc 132 asshown in Figs. 23 and 24. The forward end of the trough 22 is supportedfrom the carriage-frame 119 by a hanger 135; and as the ad'acent ends ofthe troughs 21-22 are secure together, as best shown in Fig. 4, theparts of the apparatus may be wholly suspended from the frame 119. Inpractice, the hanger 135 is made vertically adjustable by means of ascrewthreaded bolt 136 which is fitted in a suitable bearing 137 carriedby the frame 119, and.

screws into the hanger 135; so, that by rotating said bolt the hanger135 may be raised or lowered at pleasure, to raise or lower the trough22. For rotating the bolt 136 it is provided with a hand-wheel 138, asshown in Fig. 17.

When in use the trough 22 rests on the ground, but for transportationpurposes it is raised out of contact with the ground by by the blades ofthe frames 109/ means of the bolt 136. When the trou h 22 is thus liftedthe lower end of the inc ined' trough 21 is also lifted by reason of itsconnection with the trough 22, the two troughs together being supportedclear of the ground by the carriage,-the forward end of the trough 22being suspended by means of the hanger 135 and the rear or upper end ofthe inclined trough 21 by pivots 220-221,

shown in Fig. 24, which permit the lower end of the inclined trough tobe raised and lowered.

The charging-pans 30-31 are tilted in the portable machine shown inFigs. 17 to 21 by means of cables 139-140, which connect, re-

respectively, on the upper ends of verticallyarranged shafts 150-151,which carry at their lower ends levers 152-153, respectively, connectedby connecting-rods 154- 155, respectively, with hand-levers 156-157placed near the operators seat. (See Figs. 17 and 21.) Thus, by'means ofthe levers 156-157, either of the drums 141-142 may be operativelyconnected with the shaft 143. Said shaft is driven in a constantdirection by means of a chain 158, which connects sprocket wheels159-160, mounted, respectively, on the shaft 143 and on the engineshaft161, as shown in Fig. 21. The s rocketwheel 160 is loosely mounted ontie shaft 161, and is adapted to be connected. therewith byclutch-mechanism 162 operated by a lever 163 carried bya vertical shaft164 and adapted to be rocked by a lever 165, connecting-rod 166 andhand-lever 167, so that by operatin r said hand-lever the rotation ofthe main c rive-shaft 143 may be controlled at pleasure.

As hereinbefore described, the machine is propelled from the enginethrough chain 131. As shown in Fig. 17, the chain 131 passes over asprocket wheel 168 mounted onthe shaft 129; and as shown in Fig. 21,said chain passes also over a sprocket-wheel 169 mounted on theengine-shaft 161. The. latter sprocket-wheel is loosely mounted on saidengine-shaft, and is adapted to be operatively connected therewith byclutch-mechanism 170 operated by a lever 171 which is carried on avertical shaft 172. Said shaft also carries a lever 173, which isconnected by a conmeeting-rod 174 with a hand-lever 175, so that theoperator may connect or disconnect the wheels with the engine. Forreversing the wheels to back the machine, I provide a 1Y6 mounted on eleather on the resin drive-shaft 143 end adopted to he moved oengagement with e geer 17-? mounted on l ne 129, as shown in Fig. 20.The-gear 175 is'nioved laterally to mesh with the gear H by a lever 178,mounted one vertical L7 and connected through e'le'ver 1S0connecting-rod 181 with a liendlever The ma hine may be stopped bydisonnccting ti sprocket- *hoel with the engine-shaft lfi'l. It may bedriven forward or connecting said sprocketcvhe 1 k 'ne-sliuit, and. itmay be lie. d by disacting seid s'proclmt-vi'heel with the enshuit endceasing the 176 to interso with the gear 177 these different opus beingaccomplished by operating spproyrinte hund-.-evers, all of which, asshown in Figs. l7 and 21, are arranged adjaor to each other in front ofthe oocrnlors indicmes u SglOOli' c-wheel, 's'liich is :-d y chain 184with the sprocketwhich iizi is the corweyl-xr 43. The spro! lcet-whecl183 loosely mounted rue-in drive-shalt lell, snd is oils .zted so beconnected thereto 0 clutch-iueci'ianisin 185 .l oncmted a lever 18??mounted on a vertical sl l t 187 and con p na e-d by e lever E5 38 andco nccl' lOLl 1539 u hand-lover 190, as lor may redily ou'o'i ruecorwoyer, r. itlrout regard to rut-ion of the other ports of the rnecl1u s with in: hi 5 {Hill pro- 4 pivotelly a r end in a. sleeve 192, 3 tis free to smug from side IO side us The sleeve W2 is sup- 1y a'otetnole post or coluuui M93,

.5 lower end upon the ironic r tes a, brace for the lower por- I *he191. The post 293 is ronl one direction or the other, to swing s out 191from side to side, by means of ilreun 1%, connected at its free end toan 1% which is secured to and projects 1e post 193,.es shown in Figs. 1?and t lhe opposite end of sand pitnmn 'lS con-- The iuluptcil rorugugothe rear wheels.

l with said i seen that the operator at all times has corn trol of thevarious operations of the and may drive it in either direction, mayregulate the operation of the conveyers, the charging of the materials,and the distribution of the mixed concrete, according to his pleasure.In order that he may steer the machine es well, I provide asupplementary steering-wheel. 20?, mounted on a shaft 208 near the operanous seat and connected with the steering-wheel 124 by s cable 209 whichpasses around a wheellLO mounted on the l. er portion of the shaft 208,as shown in Fig. 17.

So for as I am aware, no one has heretofore produced a concreteunixingmachine in which the materials to be mixed have been simultaneouslyelevated and moved laterally r trans versely from side to side, andthereby mixed; and, so for 'as the generic invention is concerned, it isinuneterinl Whether this result be acc mplished by means of either orthe forms of apparatus described or by other equivalent. means, as myinvention includes, broadly, the use of other mechanisms equivalent forthose described. Furthermore, l wish it to be understood that, except inso for as the particular constructions illustrated are specificallyclaimed, my invention is not restricted to details of construct on. butincludes, generically, the suhjeictuustter of the broader claims.

1. A coucrete-mixing machine, coiupr'sing e11 inclined trough on whichthe materials to bo'mixedsro supported during the eleysling and mixing 0oration, "means for elevating and mixing tare materials in said trough,

st; 15 My lion's l trough eugni in ug i cor iecting therewith, en ennveyer adopted to move through ssl ghs hsvinq menus for elevating; en.nix ng the nieterieis, end swinging pens at csite sides of said conveyeradapted to supply meteriels to he mixed to said horizontal trough. y

3. A concrete-mixing machine. comprisin a trough longitudinally inclinedwith rororcucc to a; horizontal plane, on which the nuitcrinls to bemixed zu'c supported during the elevating and mixing operation. a so?stantially horizontal trough adjacent to said inclined trough andconnecting therewith, an endless conveyer adapted to move through saidtroughs and having means for elevating and mixing the materials,swinging pans at opposite sides of said conveyer adapted to supplymaterials to be mixed to said hori. zontal trough, and means foractuating said pans alternately to discharge the contents thereof intosaid horizontal trough. w 7

4. A concrete-mixing machinefcomprising a carria e, avertically-adjustable trough supported thereby, said trough beinglongitudinally inclined with reference to the horizontal, means forvertically adjusting said trough, and means operating in connectiontherewith for elevating and simultaneously mixin the materials to bemixed.

5. 1i concrete-mixing machine, com-prising a carriage, a trou hlongitudinally inclined with reference'to the horizontal, a horizontaltrough communicating with the lower portion of said inclined trough, anendless traveling conveyer adapted to move through said troughs andhaving means for elevating and mixing materials supported in saidtroughs, and means carried y said carriage for operating said conveyer.

6. A concrete-mixing machine, comprising a carriage, a troughlongitudinally inclined with reference to the horizontal, a horizontaltrough communicating with the lower portion of said inclined trough, anendless traveling conveyer adapted to move through said troughs andhaving means for elevating and mixing materials sup orted in saidtroughs, means carried by saic carriage for operating said conveyer, andmeans for raising andlowering said horizontal trough.

7. The combination of a carriage, a trough supported thereby andlongitudinally inclined with reference to the horizontal, a horizontaltrough communicating with said inclined trough and supported by saidcarriage,,means for moving materials through said troughs and mixing thesame as they are carried up through said inclined trough, means forvertical y adjusting said horizon ta trough, and means carried by saidcarriage for operating said moving and mixing means.

8. The combination of a carriage, a trough supported thereby andlongitudinally inclined with reference to the horizontal, a horizontaltrough communicating with said inclined trough and supported by saidcarriage, means for supplying materials to be mixed to said horizontaltrough, means for moving the materials through said troughs, and mixingthe same in said inclined trough, means for vertically adjusting saidhorizontal trough, and means carriedby said carriage for operating saidsupplying means and for driving said moving and mixing means.

9. A concrete-mixing machine, comprising a carriage, means carried bysaid carriage for elevating and simultaneously mixing the materials tobe mixed, driving mechanism mounted on said carriage, means for drivingsaid elevating and mixing means from said driving-mechanism, and adischarging de vice mounted on the carriage and arranged to receivemixed materials from said elevating and mixing means, said dischargingdevice being adjustable to distribute the materials.

10. A concrete-mixing machine, compris ing a carriage, means carriedbysaid car riage for elevating and mixing the materials to be mixed,driving-mechanism mounted on said carriage, means for driving saidelevating "and mixing means from said drivingmechanism, a dischargingdevice mounted on the carriage and arranged to receive mixed materialsfrom said elevating and mixing means, said discharging device beingadjustable' to distribute the materials, and means for adjusting saiddischarging device by means of said'driving-mechanism.

11. A concrete-mixing machine, comprising a trough,- a conveyeroperating in said trough to mix the materials placed therein, a plateextending over said trough and having openings for the passage of thematerials, plates adjacent to said openings for regulating the sizethereof, said plates having downturned ends, and means for chargingmaterials upon said plate,

12. A oncret-mixing machine, comprising a tro gh, a conveyer movablethrough said trough, a plate extending over said trough and havingopenings for the passage of the materials to be mixed, and platesadjustably carried by said first mentioned plate, the latter plateshaving hinged ends adapted to engage the conveyer.

13. A concrete-mixing machine, comprising a trough longitudinallyinclined with reference to the horizontal, on which the materials to beelevated are supported during the elevating and mixing operation, and aplurality of traveling conveyors arranged to move upivard in said troughsaid conveyers having means which operate to elevate and mix thematerials supported thereby.

14. A concrete-mixing machine, comprising a trough longitudinallyinclined with reference to the horizontal, on which the materials to beelevated are supported during the elevating and mixing operation, aplurality of traveling conveyer-s arranged to move upward in said troughsaid conveyers having means which operate to elevate and mix thematerials supported thereby, and means for driving said conveyors atdifferent rates of speed.

15. A concrete-mixing :nachine, comprising a trough longitudinallyinclined with reference to the horizontal, on WhI'QlTl the ma terials tobe mixed are supportediduring the ssaaes elevating and mixing operation,and a lurality of traveling conveyers arrange to move upward in saidtrough said conveyers havin means which operate to elevate and mix tiematerials supported thereby, said trough having a depressed portionextending longitudinally thereof. 7;

v16. A concrete-mixing machine, comprising a trough, a plurality ofconveyers movable longitudinally of said trough, said conveyers beingarranged on different levels and having means which operate to elevateand mix the materials supported by said trough, and means for drivingsaid conveyers.

17. A concrete-mixing machine, compris ing a trough, a lurality ofconveyers movable longitudina ly of said trough, said conveyers beingarranged on difierent levels and having means which operate to elevateand mix the materials supported by said trough, and means for drivingsaid conveyers at different rates of speed.

18. A concrete-mixing machine, comprising a trough longitudinallyinclined with reference to the horizontal, a plurality of con veyersadapted to move upward in said trough, said conveyers being arranged tocarry upward therein the materials to be mixed and to move saidmaterials transversely from side to side, and means for driving saidconveyers at diflerent rates of speed.

19. A concrete-mixing machine, comprising a trough longitudinallyinclined with reference to the horizontal, said trough having adepressed portion, a plurality of conveyers moving in different planesin said trou teria ls therein, and means for driving said conveyers.

20. A concrete-mixing machine, comprisin a trough longitudinallyinclined with re erence to the horizontal, on which the materials to bemixed are adapted to he sup ported during the elevating and mixingoperation, said trough having a depressed portion, a plurality oftraveling conveyers on different levels in said trough and having meanswhich operate to carry the materials therein upward and mix the same,and means for driving said conveyers.

RALPH '1. SOLLITT. lVitnesses:

JOHN L. JACKSON,

HELEN M. COLLIN,

h and having means for mixing the ina- I I

